[ECON] 2017 DSE經濟科討論區(3)

QTM: MV=PY
V is constant

Classical QTM: MV=PY
V & Y constant

我地唔係淨係考v constant？

A pianist plays the piano at home and he does not pay or receive payments from his neighbour.下面邊個岩？
A: there must be a divergence between private and social benefit if his neighbour likes the music.
B: there must a divergence between private and social cost if his neighbour doesn't like the music.
C: the above situation must be in efficient whether or not his neighbour likes or dislikes the music
D: the above situation must be efficient whether or not his neighbour likes or dislikes the music

"校園經濟／校園商業"呢個fb page有幾頁以題說理既相, 咁岩就係講社會成本分歧, 你去望望

QTM: MV=PY
V is constant

Classical QTM: MV=PY
V & Y constant

我地唔係淨係考v constant？

Long run QTM都要考呀

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

Paper 1 MCQ
1. 一分鐘一條，唔好停係一條太耐，要留10分鐘check卷。
2. 今日睇翻做過既題目，唔好再做太多新野。
3. 唔識既就試排除法
4. 睇清楚NOT true
5. 留意題目提問用字，MUST(必然)係要向反證既方向諗，諗下們會唔會錯。MAY(可能)你係要指出佢可能不，諗有無一個情況佢會岩。呢d字撈亂就會錯。
6. 題目可能有錯，揀最佳答案。
7. 今年應該會再少d直接問definition既題目。
8. Elasticity 彈性小心睇，係計緊demand 定supply係睇你move along邊條curve，不是你shift 個條。
9. 睇清楚Average(平均)/Marginal(邊際)/Total(總)
10. Classical QTM=LR QTM (上年一班人唔識)
11. Positive statement實證陳述係要refutable by facts(可被事實推翻)，而唔係要正確。錯既statement(e.g. 我放手既枝筆會向上飛)都可以係實證。
12. 唔好複雜化條題目，推理用正常方式做，有時intuition 好重要。
13. GDP睇清楚d components，有時係net(淨)，有時係total(總)，Investment Expenditures 都要睇清楚。

Help push

第10個 QTM即係點？

qtm係古典班友搞出黎, 古典假設就係y不變即係y係=潛在產出, 即係所謂長期
之所以有所謂短期qtm, 係因為上世紀有人做研究發現o係短期入面y可以郁, 即係話以前既qtm係有問題
正路qtm就冇分長短期, 因為qtm本身就假設個經濟係處於潛在產出水平, 充其量你可以話qtm即係長期, 但話qtm係短期就.....
總之qtm幾時都假設緊v/k同y係不變
話m升所以(py)升係符合qtm, 因為y唔變, (py)升其實係p升哂y唔變


短期入面m升, p可以升多左, y會跌返直至m升=(py)升, 但呢個唔係qtm

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

About the mock paper by outliners (MC)

1. Q36
點解MS increases by 10b, nominal GDP is possible to increase by more than 10b?
如果用banking multiplier 去諗，會多左loan, then 多左investment
但題目要用QTM諗

2. Q40
Why salaries tax rate is a supply side factor?
Also, statutory minimum wage would affect disposable income and cost of production; why it is not the answer?

3. Q42
Why reduce expenditure on social welfare can eliminate trade deficit?

4. Q44
Option C, marginal cost 同comparative advantage 既relationship係咩？

Thank you

About the mock paper by outliners (MC)

1. Q36
點解MS increases by 10b, nominal GDP is possible to increase by more than 10b?
如果用banking multiplier 去諗，會多左loan, then 多左investment
但題目要用QTM諗

2. Q40
Why salaries tax rate is a supply side factor?
Also, statutory minimum wage would affect disposable income and cost of production; why it is not the answer?

3. Q42
Why reduce expenditure on social welfare can eliminate trade deficit?
4. Q44
Option C, marginal cost 同comparative advantage 既relationship係咩？

Thank you

1. V=constant，v can be 1 or 100000
2. Working incentive
Minimum wage唔係一定人人受惠
3. G跌ad跌，y跌 income 跌 import expenditure跌 net export升given the same volume of export
4. Marginal cost: change in total cost by producing an additional unit of good
Mc smaller than other country
Forgo less amount of resources in producing a good than another country

Thanks
Point 2
但題目係問which is a factor
雖然唔係個個受惠
但都改變唔到佢係一個factor

And why salaries tax is a supply side factor?

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

About the mock paper by outliners (MC)

3. Q42
Why reduce expenditure on social welfare can eliminate trade deficit?

3. G跌ad跌，y跌 income 跌 import expenditure跌 net export升given the same volume of export

social welfare唔係transfer payment?

Paper 1 MCQ
1. 一分鐘一條，唔好停係一條太耐，要留10分鐘check卷。
2. 今日睇翻做過既題目，唔好再做太多新野。
3. 唔識既就試排除法
4. 睇清楚NOT true
5. 留意題目提問用字，MUST(必然)係要向反證既方向諗，諗下們會唔會錯。MAY(可能)你係要指出佢可能不，諗有無一個情況佢會岩。呢d字撈亂就會錯。
6. 題目可能有錯，揀最佳答案。
7. 今年應該會再少d直接問definition既題目。
8. Elasticity 彈性小心睇，係計緊demand 定supply係睇你move along邊條curve，不是你shift 個條。
9. 睇清楚Average(平均)/Marginal(邊際)/Total(總)
10. Classical QTM=LR QTM (上年一班人唔識)
11. Positive statement實證陳述係要refutable by facts(可被事實推翻)，而唔係要正確。錯既statement(e.g. 我放手既枝筆會向上飛)都可以係實證。
12. 唔好複雜化條題目，推理用正常方式做，有時intuition 好重要。
13. GDP睇清楚d components，有時係net(淨)，有時係total(總)，Investment Expenditures 都要睇清楚。

Help push

第10個 QTM即係點？

qtm係古典班友搞出黎, 古典假設就係y不變即係y係=潛在產出, 即係所謂長期
之所以有所謂短期qtm, 係因為上世紀有人做研究發現o係短期入面y可以郁, 即係話以前既qtm係有問題
正路qtm就冇分長短期, 因為qtm本身就假設個經濟係處於潛在產出水平, 充其量你可以話qtm即係長期, 但話qtm係短期就.....
總之qtm幾時都假設緊v/k同y係不變
話m升所以(py)升係符合qtm, 因為y唔變, (py)升其實係p升哂y唔變


短期入面m升, p可以升多左, y會跌返直至m升=(py)升, 但呢個唔係qtm

短期QTM Y係可變(gm=gp+gy)
長期QTM Y不變(gm=gp)

About the mock paper by outliners (MC)

3. Q42
Why reduce expenditure on social welfare can eliminate trade deficit?

3. G跌ad跌，y跌 income 跌 import expenditure跌 net export升given the same volume of export

social welfare唔係transfer payment?

唔一定派錢既

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

搭單問
AD consumer perspectives
AS firm perspectives
會唔會好似circular flow of economic models 有product and labour market?

If employment 係長期
Quality of labour would decrease
Then LRAS would be affected right???

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

咩叫失業影響sras..你想講失業越多sras越低?

lras個y係潛在產出, 你學gdp個chapter應該有講點樣增加潛在產出
平均生產力入面既總工時都唔單係勞工數目而係仲有工時數目

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

咩叫失業影響sras..你想講失業越多sras越低?

lras個y係潛在產出, 你學gdp個chapter應該有講點樣增加潛在產出
平均生產力入面既總工時都唔單係勞工數目而係仲有工時數目

Employment should affect AD in short run because it leads to a decrease in disposable income

About the mock paper by outliners (MC)

1. Q36
點解MS increases by 10b, nominal GDP is possible to increase by more than 10b?
如果用banking multiplier 去諗，會多左loan, then 多左investment
但題目要用QTM諗

2. Q40
Why salaries tax rate is a supply side factor?
Also, statutory minimum wage would affect disposable income and cost of production; why it is not the answer?

3. Q42
Why reduce expenditure on social welfare can eliminate trade deficit?
4. Q44
Option C, marginal cost 同comparative advantage 既relationship係咩？

Thank you

1. V=constant，v can be 1 or 100000
2. Working incentive
Minimum wage唔係一定人人受惠
3. G跌ad跌，y跌 income 跌 import expenditure跌 net export升given the same volume of export
4. Marginal cost: change in total cost by producing an additional unit of good
Mc smaller than other country
Forgo less amount of resources in producing a good than another country

Thanks
Point 2
但題目係問which is a factor
雖然唔係個個受惠
但都改變唔到佢係一個factor

And why salaries tax is a supply side factor?

影響sras就係supply factor?
Salary tax->disincentive effect->sras drop

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

搭單問
AD consumer perspectives
AS firm perspectives
會唔會好似circular flow of economic models 有product and labour market?

If unemployment 係長期
Quality of labour would decrease
Then LRAS would be affected right???

Typo

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

咩叫失業影響sras..你想講失業越多sras越低?

lras個y係潛在產出, 你學gdp個chapter應該有講點樣增加潛在產出
平均生產力入面既總工時都唔單係勞工數目而係仲有工時數目

Employment should affect AD in short run because it leads to a decrease in disposable income

即係unemployment increase 係咪令sras 下降 而潛在產出（LRAS)唔會影響

想問 失業係咪只會影響SRAS
而LRAS係勞動人口下降先影響 （唔計生產力果d)

萬分感謝

推

咩叫失業影響sras..你想講失業越多sras越低?

lras個y係潛在產出, 你學gdp個chapter應該有講點樣增加潛在產出
平均生產力入面既總工時都唔單係勞工數目而係仲有工時數目

Employment should affect AD in short run because it leads to a decrease in disposable income

即係unemployment increase 係咪令sras 下降 而潛在產出（LRAS)唔會影響

冇野了

Paper 1 MCQ
1. 一分鐘一條，唔好停係一條太耐，要留10分鐘check卷。
2. 今日睇翻做過既題目，唔好再做太多新野。
3. 唔識既就試排除法
4. 睇清楚NOT true
5. 留意題目提問用字，MUST(必然)係要向反證既方向諗，諗下們會唔會錯。MAY(可能)你係要指出佢可能不，諗有無一個情況佢會岩。呢d字撈亂就會錯。
6. 題目可能有錯，揀最佳答案。
7. 今年應該會再少d直接問definition既題目。
8. Elasticity 彈性小心睇，係計緊demand 定supply係睇你move along邊條curve，不是你shift 個條。
9. 睇清楚Average(平均)/Marginal(邊際)/Total(總)
10. Classical QTM=LR QTM (上年一班人唔識)
11. Positive statement實證陳述係要refutable by facts(可被事實推翻)，而唔係要正確。錯既statement(e.g. 我放手既枝筆會向上飛)都可以係實證。
12. 唔好複雜化條題目，推理用正常方式做，有時intuition 好重要。
13. GDP睇清楚d components，有時係net(淨)，有時係total(總)，Investment Expenditures 都要睇清楚。

Help push

第10個 QTM即係點？

qtm係古典班友搞出黎, 古典假設就係y不變即係y係=潛在產出, 即係所謂長期
之所以有所謂短期qtm, 係因為上世紀有人做研究發現o係短期入面y可以郁, 即係話以前既qtm係有問題
正路qtm就冇分長短期, 因為qtm本身就假設個經濟係處於潛在產出水平, 充其量你可以話qtm即係長期, 但話qtm係短期就.....
總之qtm幾時都假設緊v/k同y係不變
話m升所以(py)升係符合qtm, 因為y唔變, (py)升其實係p升哂y唔變


短期入面m升, p可以升多左, y會跌返直至m升=(py)升, 但呢個唔係qtm

短期QTM Y係可變(gm=gp+gy)
長期QTM Y不變(gm=gp)

應該係以前al paper 2搞出黎既禍, 以前99年同02年長題目用左qtm呢個名但係其實係指equation of exchange, 冇跟gv=gy=0呢個qtm假設
後來俾人嘈, 出卷條友認衰仔, 之後長題目隔左好耐都冇再考qtm, 去到10年先再出而條題目已經唔敢再用qtm呢個名

al mc就分得好清楚, eoe同qtm兩回事
al mc常考就係qtm可以係gm=gp+gy因為gy=0

依家dse將錯就錯

About the mock paper by outliners (MC)

1. Q36
點解MS increases by 10b, nominal GDP is possible to increase by more than 10b?
如果用banking multiplier 去諗，會多左loan, then 多左investment
但題目要用QTM諗

2. Q40
Why salaries tax rate is a supply side factor?
Also, statutory minimum wage would affect disposable income and cost of production; why it is not the answer?

3. Q42
Why reduce expenditure on social welfare can eliminate trade deficit?
4. Q44
Option C, marginal cost 同comparative advantage 既relationship係咩？

Thank you

1. V=constant，v can be 1 or 100000
2. Working incentive
Minimum wage唔係一定人人受惠
3. G跌ad跌，y跌 income 跌 import expenditure跌 net export升given the same volume of export
4. Marginal cost: change in total cost by producing an additional unit of good
Mc smaller than other country
Forgo less amount of resources in producing a good than another country

Thanks
Point 2
但題目係問which is a factor
雖然唔係個個受惠
但都改變唔到佢係一個factor

And why salaries tax is a supply side factor?

Minimum wage升唔一定升income of worker
根本影響唔到ad
Increase salaries tax rate would reduce the net return from working and thus the working incentive , willingness to supply labour effort decreases

咁即係minimum wage 會對AD有effect but uncertain
So salaries tax is BEST answer??

Final Reminder on Paper 2
1. 小心推理，問自己「跟住會點」，逐步逐步寫番個推理出黎。
2. 唔好驚比數據你既題目，個數據只係比你既一個info，你要知係數據話比你聽既情況／改變，然之後做好你既分析。d數據唔會好難明，叫你describe亦都唔洗好似LS咁寫，剩係描述就得。
3. Label diagram請唔好用簡寫
4. 睇清題目用字(may 可能, must 必然, can 可以, will 將會)
5. Evaluate 題目：如果比哂方向你，叫你evaluate how xx change yy(2016 機場稅)，呢d同一般題目一樣，無特別。但如果係evaluate xx (in terms of yy)，你要比多過一個stakeholder/viewpoint，無比明確方向既，就係腦入面scan 一次學過既area，你總諗到關事既野，呢d比分好鬆。
6. 唔好做哂兩個elective，用d時間去check番之前既parts好過。

Elective 1:
－留意MC curve（邊際成本曲線）係向上定horizontal (constant MC)
－今晚睇下objectives of implementing competition ordinance in HK （設立競爭條例的目的）

Elective 2:
－留意比你既資料，投入／產出，和／或。
－Concave PPF 如果有數字計既，唔好compare slope
－Concave PPF叫你係圖show gain from trade，請好似SP/2015 咁畫一個直角show個gain，唔好油上下兩個三角形。
－HDI請你寫出1個area + 佢點measure（health measured by life expectancy at birth, education measured by mean years of schoolings)
例子：why trade improve HDI.
Ans: trade enables transfer of medical technology, which may raise people's life expectancy at birth, thus improving health in the country.
－唔好寫LS個d多樣性落去，呢度唔係吹水既地方。